Prisonplanet.com - Top Ten Smoking Guns of 9/11

9/11: Ten Smoking Guns
This article is a great culmination of questions surrounding 9/11 which have not been fully discussed or answered.

Here is a sample:

9) Between September 6 and 7, the Chicago Board Options Exchange saw purchases of 4,744 put options on United Airlines, but only 396 call options. On September 10, 4,516 put options on American Airlines were bought on the Chicago exchange, compared to only 748 calls.

The investigation as to which criminals benefited from advance knowledge of the terrorist attack led straight to Alex Brown/Deutsche Bank - chaired up until 1997 by executive director of the CIA, Buzzy Krongard.

Why wasn't Krongard taken in for questioning by the FBI and who else was involved in this insider trading?